HIGH

CVE-2026-11622

CVSS v3

7.5

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

bindAlmaLinux:10all versions · fixed in 32:9.18.33-15.el10_2.10and 7 other packages
bindAlmaLinux:9all versions · fixed in 32:9.16.23-40.el9_8.8and 9 other packages
bindAlmaLinux:8all versions · fixed in 32:9.11.36-16.el8_10.14and 16 other packages
bind9.16AlmaLinux:8all versions · fixed in 32:9.16.23-0.22.el8_10.12and 8 other packages
bind9.18AlmaLinux:9all versions · fixed in 32:9.18.29-14.el9_8.8and 6 other packages

Vendor advisories

CVE-2026-11622 Red Hat Product Security575 products fixed · 8 known affected
bind: bind9: Potential memory usage beyond configured limits
bind as a component of Red Hat Enterprise Linux 6 · bind-chroot as a component of Red Hat Enterprise Linux 6 · bind-devel as a component of Red Hat Enterprise Linux 6
RHSA-2026:80501 Red Hat Product Security6 products fixed
Red Hat Security Advisory: bind9.16 security, bug fix, and enhancement update
RHSA-2026:79160 Red Hat Product Security8 products fixed
Red Hat Security Advisory: bind9.16 security, bug fix, and enhancement update
RHSA-2026:60383 Red Hat Product Security26 products fixed
Red Hat Security Advisory: bind security update
RHSA-2026:57362 Red Hat Product Security4 products fixed
Red Hat Security Advisory: OpenShift Container Platform 4.22.11 bug fix and security update
RHSA-2026:57189 Red Hat Product Security44 products fixed
Red Hat Security Advisory: bind security update

7 more advisories

Full record on NVD

Description

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the limit configured in the `max-cache-size` parameter. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-07-22
Last Modified: 2026-07-22

Frequently asked questions

What is CVE-2026-11622?

Is CVE-2026-11622 actively exploited?

Active exploitation of CVE-2026-11622 has not been confirmed. Its EPSS score was 0.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-11622?

CVE-2026-11622 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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